Boss item (yellow). What the game says, what it really does, what each copy adds and what it pairs with.

Charged Perforator
Boss item (yellow)
10% of your hits call down a strong lightning bolt. Each extra one, more damage.
Game text: «10% chance on hit to call down a lightning strike, dealing 500% (+500% per stack) damage.»
Stacking: Each copy adds the same, no cap.
Watch out: It deals 500% of the hit, not base damage. The strike is delayed and fast enemies can dodge it.
It has a void version: Newly Hatched Zoea. Pick that up and every copy of this item turns into it.
| 1 copy | 2 copies | 3 copies | 5 copies | 10 copies |
|---|---|---|---|---|
| +500% | +1000% | +1500% | +2500% | +5000% |
Each copy adds the same.
Dropped by a teleporter boss: each green item it drops has a 15% chance to be this one.
Unlocked from the start: it can show up in any run.
10% of your hits call down a strong lightning bolt. Each extra one, more damage.
Stacking: Each copy adds the same, no cap.Watch out: It deals 500% of the hit, not base damage. The strike is delayed and fast enemies can dodge it.
Dropped by a teleporter boss: each green item it drops has a 15% chance to be this one. Unlocked from the start: it can show up in any run.
Sources: the game's English text (name and description), the Risk of Rain 2 wiki (riskofrain2.wiki.gg: this item's page, read on 31 October 2026; numbers, stacking formula and notes) and the wiki's survivor pages. The plain-words text and the synergies are ours. Icons: Risk of Rain 2 (Hopoo Games / Gearbox).